Map of Colorado Territory embracing the Central Gold Region [cartographic material] / drawn by Frederick J. Ebert ; under direction of the Governor Wm. Gilpin.
MLA
Ebert, Frederick J. Map of Colorado Territory Embracing the Central Gold Region [Cartographic Material] / Drawn by Frederick J. Ebert ; under Direction of the Governor Wm. Gilpin. Jacob Monk, 1862. https://collections.library.yale.edu/catalog/16664836.
APA, 6th edition
Ebert, F. J. (1862). Map of Colorado Territory embracing the Central Gold Region [cartographic material] / drawn by Frederick J. Ebert ; under direction of the Governor Wm. Gilpin. [Maps, Physical maps]. Jacob Monk, https://collections.library.yale.edu/catalog/16664836.
